Cisco Exam 300-815 Topic 1 Question 82 Discussion

Actual exam question for Cisco's 300-815 exam

Question #: 82
Topic #: 1

The SIP session refresh timer allows the RTP session to stay active during an active call. The Cisco UCM sends either SIP-INVITE or SIP-UPDATE messages in a regular interval of time throughout the active duration of the call. During a troubleshooting session, the engineer finds that the Cisco UCM is sending SIP-UPDATE as the SIP session refresher, and the engineer would like to use SIP-INVITE as the session refresher. What configuration should be made in the Cisco UCM to achieve this?

AEnable SIP ReMXX Options on the SIP profile.

BEnable Send send-receive SDP in mid-call INVITE on the SIP profile.

CChange Session Refresh Method on the SIP profile to INVITE.

DIncrease Retry INVITE to 20 seconds on the SIP profile.

Show Suggested Answer

Suggested Answer: C

by Lashandra at Mar 05, 2024, 04:25 PM

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Theron

5 months ago

I think Julieta is correct. In order to specifically use SIP-INVITE as the session refresher, changing the Session Refresh Method setting to INVITE makes the most sense.

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Julieta

6 months ago

That's a valid point, Luz. But I still think changing the Session Refresh Method to INVITE is the most direct solution to the issue mentioned in the question.

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Luz

6 months ago

I disagree, I believe the correct answer is A) Enable SIP ReMXX Options on the SIP profile. This option allows for customization of the SIP session refresh timer.

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Julieta

6 months ago

I think the answer is C) Change Session Refresh Method on the SIP profile to INVITE. This will make the UCM use SIP-INVITE as the session refresher.

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Evangelina

6 months ago

That's a good point, we want to specifically use SIP-INVITE as the session refresher.

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Alesia

6 months ago

But wouldn't changing the Session Refresh Method to INVITE be more direct in this case?

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Karol

6 months ago

I'm not so sure, I think it might be A) Enable SIP ReMXX Options on the SIP profile.

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Evangelina

7 months ago

I agree with Alesia, changing the Session Refresh Method seems like the correct configuration to make.

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Alesia

7 months ago

I think the answer is C) Change Session Refresh Method on the SIP profile to INVITE.

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Tamera

8 months ago

Haha, yeah, the SIP-UPDATE is like the fruitcake of the SIP world - no one really wants it, but it just keeps showing up. But hey, at least this question is giving us a chance to fix that.

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Jaime

8 months ago

Agreed. Option C makes the most sense here. I'm not a fan of the SIP-UPDATE approach, it just feels like an unnecessary complication. Give me a good ol' SIP-INVITE any day!

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Whitley

7 months ago

SIP-INVITE just feels like the right choice for session refresh.

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Frederick

8 months ago

It's great to see others appreciating SIP-INVITE as well.

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Thad

8 months ago

I always prefer using SIP-INVITE for session refresh.

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Lettie

8 months ago

Definitely, SIP-INVITE is much more reliable in my experience.

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Brunilda

8 months ago

Agreed, SIP-INVITE is the way to go for session refresh.

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Avery

8 months ago

That makes sense. SIP-INVITE is simpler and more straightforward.

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Janine

8 months ago

C) Change Session Refresh Method on the SIP profile to INVITE.

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Octavio

8 months ago

Yes, exactly. From the options provided, I believe the answer is C - Change Session Refresh Method on the SIP profile to INVITE. This would allow the Cisco UCM to use SIP-INVITE as the session refresher instead of the current SIP-UPDATE.

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Lonny

8 months ago

Hmm, this is an interesting question. I think the key here is the SIP session refresh timer and how the Cisco UCM handles the SIP-INVITE and SIP-UPDATE messages during an active call.

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